diff --git a/atcoder-problems-backend/Cargo.lock b/atcoder-problems-backend/Cargo.lock
index 9b3dd3683..c38c2fc03 100644
--- a/atcoder-problems-backend/Cargo.lock
+++ b/atcoder-problems-backend/Cargo.lock
@@ -2330,9 +2330,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.6.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
+checksum = "48aaa5748ba571fb95cd2c85c09f629215d3a6ece942baa100950af03a34f733"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2681,17 +2681,6 @@ dependencies = [
  "stable_deref_trait",
 ]
 
-[[package]]
-name = "sha-1"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "028f48d513f9678cda28f6e4064755b3fbb2af6acd672f2c209b62323f7aea0f"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.4"